Holly Fadely, Allen Wilson killed, William Fadely, James Amos critically injured when hit by car driven by Gregory Tocci.

Two pedestrians are dead and two others injured after they were struck by a car in south Florida.

The crash happened Saturday at about 8 a.m. in Sebring, about 80 miles south of Orlando.

Florida Highway Patrol troopers say 54-year-old Gregory Tocci drove his 2002 Ford pickup onto the shoulder of a road where four pedestrians were walking. He struck the group with the front of his car, backed onto the roadway and then continued driving before crashing into a concrete pole.

Sixty-two-year-old Holly Fadely and 60-year-old Allen Wilson were both killed in the crash. Sixty-two-year-old William Fadely was critically injured and 73-year-old James Amos sustained serious injuries.

Tocci is in critical condition.

Troopers are uncertain why Tocci drove onto the shoulder of the road. The investigation is ongoing